D MONOQRAPHIA 



cea HoFFM., Sch^r. L?ch. helvet. exsicc, n. 24 ; Solorina cro- 

 cea AcH. , DvmEv Plant, sélect. hispa.no-lusit., sect.l, Asturicee, 

 n.48; Th.Fr. Lich. Scand. rarior. et critic. exsicc, n.5; Hepp 

 Flecht. Europ., n. 577; Anzi Lich. Ital. superior. minus rari, 

 n. 86 ; Hellbom Un. iter. criptog., n.9, Soc. dauphin., n. 5.128, 

 ac Harm. Lich. gallic. rarior. exsicc, n. 75. Praeter hsecad sta- 

 biliendam sequentem diagnosim adhibita fucrunt specimina ; 

 1, in alpibus Dovre, in Norvegia a cl. Schimper lectum; 2. in 

 Arvernia, insummo monte « plomb' du Cantal » ab Abb. Fuzet 

 collectum et 3, tandem, ex herb. royal Gardens Kew. in Ore- 

 gon, « Cascade mountains to fort Colleville, a D" Lvall lectum, 

 allit. 7500 ped,, in herb. Mus. paris, vel in meo. 



Thallus cinerescens et saepius cinereo rufescens, ma- 

 defactiis obscure virens et simul paulum cserulescens, fo- 

 liaceus, membranaceus, fragilis, opacus et lobatiis; lobi 

 5-30 mill. lati, applanati aut rarius paulum concavi, 

 contigui vel parum imbricati, in superficie primum Iseves 

 ac demum rugulosi, in ambitu plerumque rotundi, integri 

 aut crenulati plagasque usque 12 cent, latas formantes; in- 

 tus in dimidio infero rubro crocei ; subtus nervosi nervis 

 atrorufis, palmatis, prominentibusrugulosisque, interstitiis 

 Isete rubro croceis separatis atque rhizinis atratis, 3 mill. 

 longis et etiam longioribus fasciculatisque muniti. Cortex 

 hjalinus aut leviter Havidus ac hydrate kalico optime fla- 

 vens, in lobis periphericis 70-150 et in apotheciferis 200- 

 260 [X crassus, raro ex toto, ssepe in triente aut in dimidio 

 supero tantum plechtenchymaticus cellulis nunc ovoideis, 

 lumine7-14 [xlato, nunc et frequentius oblongis, 15, 24 et 

 30 jA longis ac 4, 10 et 6 |x latis ; in parte infera, non 

 plectenchymatica, verticales, articulatae, passim ramosae 

 et meatus prsebentes atque zona 10-20 ^. crassa, amorpha 

 et ope triplicis D''' Guéguen reagentis parvis rubris cor- 

 pusculis onusta tectae. Gonidiale stratum duplex : in su- 

 periore gonidia viridia, e génère Al^arum Dactylococcq 



